# -*- coding: utf-8 -*-
from functools import reduce
from operator import add


class Class(object):
    @classmethod
    def func(cls, a: int):
        a = 10


def test_variable():
    a1 = 20
    a2 = 25
    Class.func(a1)
    a1 = a2 = 30
    print(a1)
    print(a2)

if __name__ == '__main__':
    test_variable()